Fun and engaging family- focused obs-doc returns for a brand new series with a range of new animals to meet. Using a variety of filming techniques including a micro-rig, hidden cameras reveal stories never been told before such as an extremely rare Okapi giving birth - as a first-time mum or the story of male Clownfish Polo, who falls foul of a struggle for female attention in the aquarium - before deciding that if you can't beat them, you should join them, and changes sex to become a female himself or the extraordinary story of a miracle birth for elephant mum Thi, for whom keepers had given up hope after she'd gone more than 22 months pregnant with no sign of a baby.